void moveGroup(QList <ItemInfo> startClip, QList <ItemInfo> startTransition, const GenTime &offset, const int trackOffset, bool reverseMove = false);
/** move transition, startPos = (old start, old end), endPos = (new start, new end) */
void moveTransition(const ItemInfo &start, const ItemInfo &end, bool refresh);
void moveGroup(QList <ItemInfo> startClip, QList <ItemInfo> startTransition, const GenTime &offset, const int trackOffset, bool reverseMove = false);
/** move transition, startPos = (old start, old end), endPos = (new start, new end) */
void moveTransition(const ItemInfo &start, const ItemInfo &end, bool refresh);